charge up vs trouble

charge up is not a noun while trouble is a noun.

Word	Noun	Adjective	Verb	Adverb
charge up	No	No	Yes	No
trouble	Yes	No	Yes	No

As verbs, trouble is a hypernym of charge up; that is, trouble is a word with a broader meaning than charge up:

Other hypernyms of charge up include disturb, upset.

charge up (noun)	trouble (noun)
	an effort that is inconvenient
	a source of difficulty
	an event causing distress or pain
	an angry disturbance
	a strong feeling of anxiety
	an unwanted pregnancy

charge up (verb)	trouble (verb)
cause to be agitated, excited, or roused	cause bodily suffering to and make sick or indisposed
	disturb in mind or make uneasy or cause to be worried or alarmed
	move deeply
	to cause inconvenience or discomfort to
	take the trouble to do something; concern oneself